James Livingston Thomson (March 15, 1828 – December 9, 1897) was an American entomologist who studied Coleoptera independently and mostly lived in France.
A member of the Société entomologique de France, his collections of Cerambycidae, Buprestidae, Cetoniinae and Lucanidae were eventually sold to René Oberthür.
Delia died shortly after and Thomson married Anne D. Parsons from Ohio in 1885 and they moved to France and lived at Villa Elderslie, St Germain-en-Laye and spending winters at the Le Baumette near Nice.
[1] Thomson took an interest in natural history from an early age and had a collection of beetles in 1839 and apparently corresponded with Carlo Passerini in 1840.
Thomson clashed with Guérin-Méneville over the identification of three beetles Quirinus sulcithorax, Leiestes seminigra and Orestia alpina (Endomychidae).
Limited copies of the pamphlet included colored cartoon by Pasternick with one showing Guérin-Méneville as a Carabid complaining to M. Manticore (Thomson).